Hi all,

In the developer console I am trying to run below code in order to get geolocation data parsed from JSON string:

getGPS gps = new getGPS();
gps.getGPSdata();
gps.getLng();
gps.getLat();

Execution of "gps.getGPSdata();" returns "System.JSONException: Unexpected character  ('<' (code 60)): expected a valid value (number, String, array, object, 'true', 'false' or 'null') at input location [1,2]" error.
Therefore "gps.getLng();" and "gps.getLat();" don't return anything.
Please see below classes - can anyone advise on what is causing this error as I guess this have worked before.
Appreciate your help.

//class no.1
--------------------
public class getGPS {
    
    String endPointString = 'https://maps.googleapis.com/maps/api/geocode/json?address=Žerotínova 1664/57, Praha, 130 00&key=AIzaSyDpkHWwId9J1mMCqu9mirXPEwpM3XTs0GU';
    double lng;
    double lat;
    
    public double getLng() {
        return lng;
        }
    
    public double getLat() {
        return lat;
        }
    
  

      public void getGPSdata() {
          Http httpProtocol = new Http();
          HttpRequest request = new HttpRequest();
          String endpoint = endPointString;
          request.setEndPoint(endpoint);
          request.setMethod('GET');
          HttpResponse response = httpProtocol.send(request); 
          String jsonString = response.getBody();
          googleAddress addr = googleAddress.parse(jsonString);
          
googleAddress.Location loc = addr.firstLoc;
double lng = loc.lng;
double lat = loc.lat;
          
          this.lng=lng;
          this.lat=lat;

      }
    
                       
}

//class no.2
--------------------

public class googleAddress {

    public class Address_components {
        public String long_name;
        public String short_name;
        public List<String> types;
    }

    public class Geometry {
        public Location location;
        public String location_type;
        public Viewport viewport;
    }

    public List<Results> results;
    public String status;
    public Location firstLoc;

    public class Results {
        public List<Address_components> address_components;
        public String formatted_address;
        public Geometry geometry;
        public Boolean partial_match;
        public String place_id;
        public List<String> types;
    }

    public class Viewport {
        public Location northeast;
        public Location southwest;
    }

    public class Location {
        public Double lat;
        public Double lng;
    }

    
    public static googleAddress parse(String json) {
        
        googleAddress returnAddr;
        
        returnAddr = (googleAddress) System.JSON.deserialize(json, googleAddress.class);
        if (!returnAddr.results.isEmpty()){
            returnAddr.firstLoc = returnAddr.results[0].geometry.location;
        }
        return returnAddr; 
        
        
    }
}